Music mode
- Support ID3 tags of APE files.
- Support album art which is in extension header of WMA file.
- Support ID3 tags that have asynchronous flag of ID3.

System
- Fixed the error that m3u files were not recognized correctly when SD card was inserted.
- Fixed the error that external speaker volume was changed when < Pan > setting was adjusted.
- Fixed the error that inserted SD card was not recognized after removing SD card which was
not supported.
- Fixed the error that SD card was not recognized in MTP mode when device was connected to
PC with SD card inserted.